. A manual of zoology. Zoology. .'00 CCELHELMIXTIIES Tvlttu'hus Irilu'i and Hdcrodcra scJiachli, the first doing groat damage to wheat, the second lo turnips in Europe. T. attacks rye aiici hyacinths. Famih" 2. Asc.\:. ]\louth with three lips; males with two spicuh's. Xii- merous species in lower \"ertebrates. Ascjris huiihricoidcs.'^ the round worm of man (fig. 240^ inhabits the small intestine, often in enormous numbers. The females are about 5-0 inches, the males 4 inches in length. .\ female contains about 60,000,000 eggs Shortly after fertilization the eggs ]ia
. A manual of zoology. Zoology. .'00 CCELHELMIXTIIES Tvlttu'hus Irilu'i and Hdcrodcra scJiachli, the first doing groat damage to wheat, the second lo turnips in Europe. T. attacks rye aiici hyacinths. Famih" 2. Asc.\:. ]\louth with three lips; males with two spicuh's. Xii- merous species in lower \"ertebrates. Ascjris huiihricoidcs.'^ the round worm of man (fig. 240^ inhabits the small intestine, often in enormous numbers. The females are about 5-0 inches, the males 4 inches in length. .\ female contains about 60,000,000 eggs Shortly after fertilization the eggs ]iass out with the fxces, but develop! without intermediate host if, iu the course of two or diree Fig -Dorsal, end, and \'entral \'iews of head and hiiuier end of male Ascaris luinbricoidts i,from Hatsclick.) months, when the embryo is formed, thev are taken into the human intestine. 1 he development c)f the piinworm, Oxxtiris t'crw/cK/j/'/.s',* is some- what similar except that the embryos are developed in the egg at the litne of ovifiosition, and hence after a shorter stay outsicie the bodv are capiable of in- fection. The white worm, not half an inch long, lives in the rectum, especially of children, and causes intolerable itching. Asioris /«v.\* occurs in dogs and cats (occasionally in man). .1. iiu-i^alocrpluhf'^ (a fa\-orite animal for cytological researches) ami Oxyiiris Ci/ui in the horse, do little harm, Hiicrjkis iiiiiciilosa often destroys whole flocks of piigeons. Family Fig. 24;.- (//, lower teetl tral Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hertwig, Richard, 1850-1937; Kingsley, J. S. (John Sterling), 1854-1929, ed. and tr. New York, H. Holt
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectzoology, bookyear1912
